package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.dto.DishDto;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.DishFlavor;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishFlavorService;
import com.itheima.reggie.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;
import java.util.stream.Collectors;

@RestController
@Slf4j
@RequestMapping("/dish")
public class DishController {
    @Autowired
    private DishService dishService;
    @Autowired
    private DishFlavorService dishFlavorService;
    @Autowired
    private CategoryService categoryService;


    /**
     * /新增菜品
     * <p>
     * /@param dishDto
     * /@return
     */

    @PostMapping
    public R<String> save(@RequestBody DishDto dishDto) {
        dishService.saveWithFlavor(dishDto);
        return R.success("新增菜品成功");
    }

    /**
     * 菜品信息分页查询
     * /@param page
     * /@param pageSize
     * /@param name
     * /@return
     */

    @GetMapping("/page")
    public R<Page> page(int page, int pageSize, String name) {
        Page<Dish> pageInfo = new Page<>(page, pageSize);
        Page<DishDto> dishDtoPage = new Page<>();
        //1). 构造分页条件对象
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        //添加过滤条件
        lqw.like(name != null, Dish::getName, name);
        //添加排序条件
        lqw.orderByDesc(Dish::getUpdateTime);
        dishService.page(pageInfo);
        //对象拷贝
        BeanUtils.copyProperties(pageInfo, dishDtoPage, "records");
        List<Dish> records = pageInfo.getRecords();
        List<DishDto> list = records.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            return dishDto;
        }).collect(Collectors.toList());
        dishDtoPage.setRecords(list);
        //封装数据并返回
        return R.success(dishDtoPage);
    }

    /**
     * /根据id查询菜品信息和对应的口味信息
     * /@param id
     * /@return
     */
    @GetMapping("/{id}")
    public R<DishDto> get(@PathVariable Long id) {
        DishDto dishDto = dishService.getByIdWithFlavor(id);
        return R.success(dishDto);
    }

    /**
     * /修改菜品
     * /@param dishDto
     * /@return
     */
    @PutMapping
    public R<String> update(@RequestBody DishDto dishDto) {
        log.info(dishDto.toString());
        dishService.updateWithFlavor(dishDto);
        return R.success("修改菜品成功");
    }

    /**
     * 根据条件查询对应的菜品数据
     * /@param dish
     * /@return
     */
    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {
        //构造查询条件
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        //添加条件，查询状态为1（起售状态）的菜品
        lqw.eq(Dish::getStatus, 1);
        //添加排序条件
        lqw.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(lqw);

        List<DishDto> dishDtos = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            //根据id查询分类对象
            Category category = categoryService.getById(categoryId);
            if (category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }

            //当前菜品的id
            Long dishId = item.getId();
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            //SQL:select * from dish_flavor where dish_id = ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);
            return dishDto;
        }).collect(Collectors.toList());
        return R.success(dishDtos);
    }

    /*
     * /删除菜品和批量删除
     * */
    @DeleteMapping
    public R<String> delete(@RequestParam List<Long> ids) {
        log.info("删除菜品和批量删除的id是，ids:{}", ids);
        dishService.removeWithFlavor(ids);
        return R.success("删除成功");
    }

    /*
     * 起售停售
     * */

    @PostMapping("/status/{status}")
    public R<List<Dish>> status(@PathVariable Integer status, @RequestParam List<Long> ids) {
        LambdaQueryWrapper<Dish> lqw = new LambdaQueryWrapper<>();
        lqw.in(Dish::getId, ids);
        List<Dish> list = dishService.list(lqw);
        if (status == 1) {
            list = list.stream().map((item) -> {
                item.setStatus(1);
                return item;
            }).collect(Collectors.toList());
        }else{
            list = list.stream().map((item) -> {
                item.setStatus(0);
                return item;
            }).collect(Collectors.toList());
        }
        dishService.updateBatchById(list);
        return R.success(list);
    }
}
